The Recycled Candle Shop at 16 Gandy Street, Exeter is happy to take your used candles to recycle. Don't worry about emptying your scrap of debris like matches or tea light tins, they will take care of all of that for you during the refining process, and of course, recycle as much waste where possible.
For more information see the website   https://therecycledcandlecompany.co.uk/pages/recycling
Contact them by email or phone, or in person once they are open again. They will even give a discount to recyclers.